摘要
为增加虚拟物体与真实环境的融入性,使虚拟物体在真实场景中具有真实感、交互感,提出一种基于自然特征的虚实遮挡方法。通过单应矩阵变换,计算摄像机外参数矩阵,利用外参数矩阵平移向量的物理意义,比较场景中真实物体与虚拟物体相对深度值,判定遮挡与被遮挡关系,实现虚实遮挡处理。实验结果表明,该方法具有良好的实时性和较高的准确性。
To maintain sufficient merging virtual objects merging into the physical environment to enhance the interaction and the sense of reality between the virtual objects and real-world scenes,a method for handling occlusion between virtual and real objects based on natural features was proposed.The matrix of extrinsic camera parameters was computed through the homographic transformation.According to the physical features of the translation vector in the extrinsic parameters,the depth values of the real objects related to virtual objects were obtained and used to determine whether the objects were occluded.The occlusion between virtual and real objects was further tackled using the depth values.Results of experiments show that the method is capable of handling occlusion in real-time with high accuracy.
作者
刘嘉敏
刘自强
王楚迪
秦勇旭
LIU Jia-min LIUZi-qiang WANG Chu-di QIN Yong-xu(School of Information Science and Engineering,Shenyang University of Technology,Shenyang 110870,China)
出处
《计算机工程与设计》
北大核心
2017年第11期3106-3110,共5页
Computer Engineering and Design
关键词
增强现实
遮挡
自然特征
深度
虚实融合
augmented reality
occlusion
natural features
depth
virtual-actual fusion
